package com.hrhx.duhongming.util.preview;

/* ====================================================================
Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements.  See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
The ASF licenses this file to You under the Apache License, Version 2.0
(the "License"); you may not use this file except in compliance with
the License.  You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
==================================================================== */


import java.util.Formatter;

import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.xssf.usermodel.XSSFCellStyle;
import org.apache.poi.xssf.usermodel.XSSFColor;

/**
* Implementation of {@link HtmlHelper} for XSSF files.
*
* @author Ken Arnold, Industrious Media LLC
*/
public class XSSFHtmlHelper implements HtmlHelper {
 public void colorStyles(CellStyle style, Formatter out) {
     XSSFCellStyle cs = (XSSFCellStyle) style;
     styleColor(out, "background-color", cs.getFillForegroundXSSFColor());
     styleColor(out, "text-color", cs.getFont().getXSSFColor());
 }

 private void styleColor(Formatter out, String attr, XSSFColor color) {
     if (color == null || color.isAuto()) {
         return;
     }

     byte[] rgb = color.getRGB();
     if (rgb == null) {
         return;
     }

     // This is done twice -- rgba is new with CSS 3, and browser that don't
     // support it will ignore the rgba specification and stick with the
     // solid color, which is declared first
     out.format("  %s: #%02x%02x%02x;%n", attr, rgb[0], rgb[1], rgb[2]);
     byte[] argb = color.getARGB();
     if (argb == null) {
         return;
     }
     out.format("  %s: rgba(0x%02x, 0x%02x, 0x%02x, 0x%02x);%n", attr,
             argb[3], argb[0], argb[1], argb[2]);
 }
}
